How to convert a Drawable to a Bitmap?

I would like to set a certain Drawable as the device's wallpaper, but all wallpaper functions accept Bitmap s only. I cannot use WallpaperManager because I'm pre 2.1.

Should i resize the bitmap before adding to a ImageView or let the ImageView resize the Bitmap?

i have a simple question: Should i resize a bigger bitmap before adding to a ImageView or let the ImageView resize the Bitmap? What's the right way, regarding performance?

How to make glow effect around a bitmap?

The following code is what I got so far. However, there are 2 issues:

Android take screen shot programatically

First off i am writing a root app so root permissions are no issue. I've searched and searched and found a lot of code that never worked for me here is what i've pieced together so far and sorta works. When i say sorta i mean it makes an image on my /sdcard/test.png however the file is 0 bytes and obviously can't be viewed.

Determine width and height of a bitmap

I am using the following code snippet to create a bitmap with text.